Larger stock TB and a stock MAF just seems like the easiest solution if you dont want to mess with your turbo pipes coming from you intercooler and such. I dunno... when I did the setup Ive got I was thinking more along the lines of "less possible leaks and it should work just as well after being tuned".
I bought my turbo kit with the intention of running the LT1 MAF with a 72mm ported stock TB but forgot to tell ZZP to modify the kit and sell me the couplers to hook it up. I didnt feel like cutting it so I just modified my 72mm ported 97 throttle body to take a 99+ MAF.